Best Time to Visit Hanoi
Vietnam · Humid Subtropical climate · Data averaged from 2020-01-01 to 2024-12-31 (5 years)
Recommended Months
Based on temperature comfort, low precipitation, and sunshine hours, the best time to visit Hanoi is:
November → December → October
November scores 61/100 — the highest-rated month for travel.
Monthly Ratings (0-100)
Scores are weighted: temperature comfort (50%), low precipitation (30%), sunshine (20%). Higher is better.
| Month | Overall Score | Temp Comfort | Precipitation | Sunshine | Bar |
|---|---|---|---|---|---|
| January | 36 | 72 | 0 | 0 | |
| February | 39 | 78 | 0 | 0 | |
| March | 48 | 96 | 0 | 0 | |
| April | 46 | 92 | 0 | 0 | |
| May | 38 | 76 | 0 | 0 | |
| June | 33 | 66 | 0 | 0 | |
| July | 34 | 67 | 0 | 0 | |
| August | 36 | 72 | 0 | 0 | |
| September | 39 | 78 | 0 | 0 | |
| October | 46 | 92 | 0 | 0 | |
| November | 50 | 99 | 0 | 0 | |
| December | 53 | 73 | 55 | 0 |
Monthly Temperature Comfort
| Month | Mean Temp | Comfort Level |
|---|---|---|
| January | 17.4°C (63.3°F) | Mild (10-17°C) |
| February | 18.7°C (65.7°F) | Warm (18-24°C) |
| March | 22.3°C (72.1°F) | Warm (18-24°C) |
| April | 24.7°C (76.5°F) | Warm (18-24°C) |
| May | 27.9°C (82.2°F) | Hot (25-29°C) |
| June | 29.8°C (85.6°F) | Hot (25-29°C) |
| July | 29.6°C (85.3°F) | Hot (25-29°C) |
| August | 28.6°C (83.5°F) | Hot (25-29°C) |
| September | 27.4°C (81.3°F) | Hot (25-29°C) |
| October | 24.5°C (76.1°F) | Warm (18-24°C) |
| November | 22.8°C (73.0°F) | Warm (18-24°C) |
| December | 17.6°C (63.7°F) | Mild (10-17°C) |
Monthly Precipitation Rating
| Month | Rainfall (mm) | Rainy Days | Rating |
|---|---|---|---|
| January | 58.3 mm | 17.6 | Moderate |
| February | 72.2 mm | 18.6 | Wet |
| March | 93.8 mm | 21.0 | Wet |
| April | 89.1 mm | 20.0 | Wet |
| May | 206.2 mm | 21.2 | Very Wet |
| June | 273.6 mm | 21.8 | Very Wet |
| July | 280.4 mm | 25.0 | Very Wet |
| August | 386.1 mm | 27.6 | Very Wet |
| September | 434.3 mm | 25.6 | Very Wet |
| October | 215.9 mm | 16.0 | Very Wet |
| November | 50.3 mm | 10.8 | Moderate |
| December | 15.0 mm | 9.4 | Dry |
Monthly Sunshine Rating
| Month | Sunshine (hrs/day) | Rating |
|---|---|---|
| January | 4.5 hrs | Moderate |
| February | 4.1 hrs | Moderate |
| March | 3.8 hrs | Low |
| April | 5.8 hrs | Moderate |
| May | 8.3 hrs | Excellent |
| June | 8.8 hrs | Excellent |
| July | 9.7 hrs | Excellent |
| August | 8.3 hrs | Excellent |
| September | 7.4 hrs | Good |
| October | 7.5 hrs | Good |
| November | 7.9 hrs | Good |
| December | 5.6 hrs | Moderate |
Season-by-Season Breakdown
Spring (Mar-May)
Temperature: 25.0°C (77.0°F)
Rainfall: 129.7mm avg
Sunshine: 6.0 hrs/day
Humidity: 81.5%
Rainy Days: 20.7/mo
This is the warm season. Ideal for outdoor activities but be prepared for heat.
Summer (Jun-Aug)
Temperature: 29.3°C (84.7°F)
Rainfall: 313.4mm avg
Sunshine: 8.9 hrs/day
Humidity: 81.7%
Rainy Days: 24.8/mo
This is the warm season. Ideal for outdoor activities but be prepared for heat.
Autumn (Sep-Nov)
Temperature: 24.9°C (76.8°F)
Rainfall: 233.5mm avg
Sunshine: 7.6 hrs/day
Humidity: 79.2%
Rainy Days: 17.5/mo
This is the warm season. Ideal for outdoor activities but be prepared for heat.
Winter (Dec-Feb)
Temperature: 17.9°C (64.2°F)
Rainfall: 48.5mm avg
Sunshine: 4.7 hrs/day
Humidity: 74.4%
Rainy Days: 15.2/mo
Mild transitional weather — comfortable for most activities.
Frequently Asked Questions
What is the best time to visit Hanoi?
Based on our data-driven analysis, the best months to visit Hanoi are November, December, October, when temperatures are comfortable, rainfall is lower, and sunshine is plentiful. November scores 61/100, the highest-rated month.
What is the hottest month in Hanoi?
June is the hottest month with an average temperature of 29.8°C (85.6°F).
What is the coldest month in Hanoi?
January is the coldest month with an average temperature of 17.4°C (63.3°F).
When is the rainy season in Hanoi?
September is the wettest month with an average of 434.3mm of precipitation. Hanoi experiences about 235.0 rainy days per year. The driest month is December with 15.0mm.
What should I pack for a trip to Hanoi?
Packing recommendations depend on the season of your visit. Based on the climate data, pack lightweight, breathable clothing if visiting during the warm months (June is hottest at 29.8°C). For cooler months, bring layers and a warm jacket (January averages 17.4°C). A waterproof jacket or umbrella is recommended year-round as Hanoi receives 2175.0mm of annual precipitation. Sun protection is important, especially during months with high UV index.
Hanoi taught me that 'winter' in Southeast Asia is relative — but still real. I arrived in January in a t-shirt and shivered through 14°C with 85% humidity. That damp cold cuts through layers in a way the thermometer doesn't capture. Pack a fleece and light jacket November-February. The nightmare window is June-August: 33°C, 80% humidity, and downpours that flood the Old Quarter streets. May and October are the smart traveler's picks: 27°C, lower humidity, manageable rain. Always carry a compact umbrella year-round — Hanoi averages 1600mm and the rain comes fast.
Data Source: Open-Meteo historical archive (2020-01-01 to 2024-12-31). Daily measurements aggregated into monthly climate normals. Coordinates: 21.03°, 105.85°. Timezone: Asia/Ho_Chi_Minh. Last updated: 2026-07-30.